This post is a list of build component numbers for quick reference. Ferrite Cores Type 31 Size: 0.870” (21.70mm)OD. Core: 2631801802 [$3.86 in 2025] Size: 1.142” (29.01mm)OD....

I’ve been building a collection of antennas dedicated to QRP. You can get away with so much less weight and space with low power equipment. To that end, I built a 20M dipole just for QRP. The Ba...

What’s the difference between Baluns and UnUns? VIDEO - Understanding 4:1 Baluns and UNUNs for Amateur Ham Radio Antennas 73 de VE5REV

AI is incredibly amazing technology. It is so highly sophisticated that it’s scary. What if we leverage that for ham radio applications? Grok I use Grok, made by x.AI. It is absolutely mind blo...

We all know that accurate time for Ham Radio digital modes is imperative. You’ve got to have it right and there’s no substitute for it. So if you are off-grid and have no internet and can’t use you...

The tried and trusted Inverted-L Antenna shape. It’s a great way of accommodating a longer wire antenna in a more compact footprint. And apparently, it’s gainish in the direction of the bent shorte...

The Half-Square Antenna. It’s literally half-a-square. Or a square with 3 sides. This antenna has long been heralded as a DX machine. Is it any good?? Concept This wire antenna has got two quart...

I still really like QRP operating. But you know, sometimes there’s zero substitute for raw power. And by raw power I mean like 20w. LOL. Or maybe 50w or even 100w. Perhaps, though, you still want a...

Quick post about Digital Modes and the utter gong show they can be when you get RFI. The Icom IC-705 is quite notorious for locking up and being a royal pain if there is any amount of interference ...

I really like QRP operating. In an age where zillions of watts of power is the norm, I find it fun to try and do more with less. It’s ultra frustrating sometimes, particularly when trying to do a P...